Formal Mentoring is a great tool to quickly learn the ropes of editing correctly and efficiently. It includes the potential for accelerated rank and role upgrades.
The Arizona editing community communicates using Twitter, Slack, and a Google+ community, linked below.
Waze Arizona editors now uses Slack ask a source for communication. We can be found in the waze.slack.com under the channel #usa-az. You must ask an admin for access to slack.
Waze Arizona Google+ Community